可调控Ag_(2)O/g-C_(3)N_(4)的制备及降解有机染料  

Preparation of controllable Ag_(2)O/g-C_(3)N_(4)and degradation of organic dyes

作　　者：郝欣 田景芝[1] 杨万丽[1] 于怀龙 唐安生 刘思琦 HAO Xin;TIAN Jingzhi;YANG Wanli;YU Huailong;TANG Ansheng;LIU Siqi(School of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar 161006,China)

机构地区：[1]齐齐哈尔大学化学与化学工程学院,黑龙江齐齐哈尔161006

出　　处：《高师理科学刊》2022年第4期50-55,共6页Journal of Science of Teachers＇College and University

基　　金：齐齐哈尔大学研究生创新科研项目(YJSCX2021007);齐齐哈尔大学大学生创业训练计划项目(202110232321);黑龙江省教育厅基本业务项目(135209226);2018年度黑龙江省省属高校基本科研业务费科研项目(YSTSXK201850)。

摘　　要：以尿素、巴比妥酸、硝酸银为主要原料,采用热聚合法与水热合成法调控制备Ag_(2)O/g-C_(3)N_(4)复合材料.将复合材料作为光催化剂,在可见光条件下采用动态光催化方式,以甲基橙为探针,用甲基橙的降解率大小返调复合材料的制备工艺参数.着重考察原料配比对光催化降解的影响,并结合X射线衍射(XRD)、红外光谱(FTIR)、X射线光电子能谱(XPS)、透射电镜(TEM)、紫外吸收光谱(UV-Vis DRS)等表征分析手段,探究该体系的光催化机理.结果表明,Ag_(2)O/g-C_(3)N_(4)复合材料的光降解性能与Ag_(2)O和g-C_(3)N_(4)原料配比密切相关.当复合材料Ag_(2)O与g-C_(3)N_(4)的质量比为4∶1时,所制备的复合材料光催化活性相对较高,其降解率为94.30%,是纯g-C_(3)N_(4)的4.4倍,Ag_(2)O的1.2倍.The Ag_(2)O/g-C_(3)N_(4)composites were prepared by thermal polymerization and hydrothermal synthesis with urea,barbituric acid and silver nitrate as main raw materials.The composite material is used as a photocatalyst,and the dynamic photocatalytic method is adopted under visible light conditions,and the process parameters of the composite material are re-adjusted with the degradation rate of methyl orange as the probe.Focuses on the influence of raw material ratio of light catalytic degradation,and combined with X-ray diffraction(XRD),infrared spectroscopy(FTIR),X-ray photoelectron spectroscopy(XPS)and transmission electron microscopy(TEM),ultraviolet absorption spectroscopy(UV-Vis DRS)characterization analysis method,to explore the system of light catalytic mechanism.The results show that the photodegradation performance of Ag_(2)O/g-C_(3)N_(4)composites is closely related to the ratio of Ag_(2)O and g-C_(3)N_(4)raw materials.When the mass ratio of Ag_(2)O to g-C_(3)N_(4)was 4∶1,the photocatalytic activity of the composites was relatively high,and the degradation rate was 94.30%,which was 4.4 times that of pure g-C_(3)N_(4)and 1.2 times that of Ag_(2)O.

关 键 词：g-C_(3)N_(4) Ag_(2)O Ag_(2)O/g-C_(3)N_(4)复合材料 光催化 染料 

分 类 号：O643.36[理学—物理化学]